Παραπομπή APA

Covey Stephen M R & Greg Link. (2012). Smart Trust: Creating Prosperity Energy and Joy in a Low Trust World. London.

Παραπομπή Chicago Style

Covey Stephen M R και Greg Link. Smart Trust: Creating Prosperity Energy and Joy in a Low Trust World. London, 2012.

Παραπομπή MLA

Covey Stephen M R και Greg Link. Smart Trust: Creating Prosperity Energy and Joy in a Low Trust World. London, 2012.